[corny]

Both groceries and gas are sold at low profit margins - I've heard as low as 1-2% for groceries. They are commodities, there's a lot of competition, and shoppers are very price conscious. If grocery stores can make a profit selling food cheaper they will. If grocery stores can pay less rent for their stores, pay less wages for their staff, pay less for all their expenses, those savings will get passed down to consumers as cheaper food.

[trs8080]

I mean, when was the last time a company the size of a grocery store chain passed down savings to consumers? If anything, the pandemic has shown that companies will gladly continue to fleece customers despite lowering expenses. At the end of the day, they exist to extract as much profit as possible - if every one of their peers maintains high prices, consumers don't have any choice but to pay those prices.